PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/15-12:27:40
G02     338.0          80.0                5.0 +/-    0.63       5.0 +/-    0.63  0.040 / 0.100
G05     166.8          30.1               10.2 +/-    1.00      17.9 +/-    1.00  0.050 / 0.090
G06     40.1           46.3                2.6 +/-    0.70       3.4 +/-    0.70  0.120 / 0.300
G12     314.9          67.2                3.5 +/-    1.02       3.7 +/-    1.02  0.050 / 0.260
G17     85.2           11.3                4.8 +/-    2.48      13.1 +/-    2.48  0.100 / 0.160
G19     73.9           27.5                4.3 +/-    0.81       7.9 +/-    0.81  0.100 / 0.160
G24     231.8          24.8                5.9 +/-    1.02      11.5 +/-    1.02  0.020 / 0.040
G25     317.6          27.6                2.7 +/-    1.10       5.0 +/-    1.10  0.030 / 0.030
G29     286.5          11.7                5.7 +/-    3.80      15.2 +/-    3.80  0.040 / 0.040